cumings



AUTOMOBILE LIFTING JACK.

APPLICATION FILED 050.4. I9I5.

LWIWL PaIendAug. 1,1916,

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AuToMo-BILELIFIING JACK.

APPLICATION FILED DEC. 4 1915.

Lwm., PatentedAug. 1,1916.

2 SHEETS-SHEET Z.

Worum;

EDWARD M. CUMINCs, or FLINT, MICHIGAN, AssIGNOR 'ro CUMINcfs iIto'rHEIts, or

f ILINT, MICHIGAN, A CORPORATION OF MICHIGAN.

AUTOMOBILE-LIFTNG JACK.

Specication of Letters Patent.

Patented Aug. ll, 1916.

Application iled Decemberll, 1915. Serial No. 65,078.

To all whom it may concern.' n

Beit known'that l, EDWARD M. CUMINGs, la citizen of the United States of America, residing at Flint, in the county of Genesee and Stateof Michigan, have invented certain new and useful Improvements in Automobile-Lifting Jacks, of which the follow` ing is a specification. l

My present invention relates to improve ments in automobile jacks, designed for lifting automobiles or other vehicles.

The primary object of the invention is the provision of a lifting jack for use in connection with automobiles in order to overcome certain difhculties in the handling of motor cars or. automobiles, especially those.

lifting jack, by means of which the-jack.

may be made to operatev in the desired p osition', but may be actuated ata convenient point where the tank,`tires or other extra paraphernalia or accessories cannot interfere with the proper manipulation of the `ack.

J The invention consists essentially in certain novel combinations and arrangements of parts, particularly with relation to the extensible handle, as will be hereinafter more fully pointed out and claimed.

In the accompanying drawings ll have illustrated one complete example, usin two forms of the screw type of jack, o the physical embodiment of my invention, constructed according to the best mode ll have so far devised for the practical application of the principles of my invention.

Figure 1 is a side view of a jack with an extensible handle according to my invention, showing the device in operative position. Fig. 2 is la side view of the same Jack, but provided with a .train of gears, the handle detached, and showing the worm screw and shank to which the handle may .be detachably fixed. Fig. 3 is an edge view Of the upper portion of the jack of Fig. 2.

Fig. 4 is a side elevation of the handle, except the crank', parts broken away for convenience of illustration. Fig. 5 is a side view of the handle, turned at 90o to the position of the handle in Fig. 4. Fig. 6 is a longitudinal, central sectional view of a portion ofthe handle. Fig. 7 is a transverse sectional view on line 7-7 of Fig. 6.

In illustrating my invention I have utilized two forms of the screw type of lifting jack, the form shown in Fig. 1 being direct connected and the form shown in Figs. 2 and 3 being provided with a train of gears. In each form, the jack is provided'with a hollow, metallic pedestal l of -proper size and well known shape, in which at either of the two points 3 and 4, through the medium of the star pinion 5 on the shaft or journal 6. ln the form shown in Fig. 1 the jack is provided with an actuating wheel or pinion 7 on the shaft 6, while in the modified `form of the invention .in Figs. 2 and 3 a train of gears 7 8 9, are utilized. ln either form, the actuating pinion 7 or 9', is rotated through the medium of the worm screw 10 which is journaled between the bracket 11, preferably integral with the pedestal 1, and the attached bracket 12 which is bolted' to the pedestal, 1. These brackets are located in such position that the screw 10 lies in an inclined plane with its shank end 13, formed with a hole 14, at an elevation. The shank, through the hole 14 is the means of attachment for the extensible telescoping handle.

The extensible handle preferably is made up of several sections, as 15, 16, and 17, the two former being tubular in form, and, as illustrated, rectangular in cross section, while the section 17 is a metal bar for the attachment of the crank handle 18 by which the jackis operated.

Fach of the sections as 16 and 17 is provided with anopening, recess or socket 14 lill@ shank of the Worm screw and the other f-or the telescoping tubular section 16.

The spring tongues are of sufficient length to permit bending aWay 'from the tubular section in order that the locking stud or bolt may be withdrawn from its socket so that the telescoping or section of smaller dimensions may be either slipped into the larger section or be Withdrawn entirely therefrom. If the smaller section is Withdrawn, it may readily be inserted into the end of the larger section, and the cam or inclined face 19 in the smaller section pushes out the stud so that the inn'er section may be slipped into place. WVhen out of use, the sections may be telescoped one within another, or they may be entirely Withdrawn and detached from each other. To assemble the parts, the socket end is inserted Within the locking end lof the adjoining section until the locking stud engages in the socket and the parts are thus secured in Working position.

y The lifting jack may of course be used Without all the sections of the handle being present, when it is unnecessary to use the extensible handle. The sections may be of different shapes in cross section, but I have found thatthe rectangular shape is efficient and effective in that the sections of the handle areguided and kept alined at all times, and twisting' of the parts is prevented in a simple manner.

rlhe operation of the jack will readily be understood. The handle is revolved by means of the crank handle and through the revolutions imparted to the handle, the worm screw is revolved to actuate the pinions and gears as described.

What I claim is The combination with the operating mechanism of alifting jack including an actuating Worm screw having a shank, of an extensible operating handle comprising a plurality of telescoping tubular sections and a handle bar section, angular in cross area, there being sockets in the shank and sections, and a spring tongue on each section having alocking stud to engage a socket to hold the handle extended. l

In testimony whereof I affix my signature.

EDWARD M. CUMINGS. 

